A layer of PE plastic tape&comma; to protect the panel surface from scratch or damage&period;The thickness and sticky standard are various upon different supplier&period;

Color coating

By function&colon;PE & PVDF&period;PE is used for interior&comma; with 10 year life-long expectancy&semi;PVDF coating&comma; with resistance on UV&comma; acid and alkali&comma; is more suitable for exterior usage&comma; with 15-20 year guarantee&period;